23315535405 has 24 divisors (see below), whose sum is σ = 40533542712. Its totient is φ = 12398045184.

The previous prime is 23315535371. The next prime is 23315535421. The reversal of 23315535405 is 50453551332.

23315535405 is a `hidden beast` number, since 23 + 31 + 553 + 54 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2550149001 + 20765386404 = 50499^2 + 144102^2 .

It is not a de Polignac number, because 23315535405 - 2²⁰ = 23314486829 is a prime.

It is a super-2 number, since 2×23315535405² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23315535405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 753564 + ... + 783893.

It is an arithmetic number, because the mean of its divisors is an integer number (1688897613).

Almost surely, 2^23315535405 is an apocalyptic number.

It is an amenable number.

23315535405 is a deficient number, since it is larger than the sum of its proper divisors (17218007307).

23315535405 is a wasteful number, since it uses less digits than its factorization.

23315535405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537805 (or 1537802 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 36.

The spelling of 23315535405 in words is "twenty-three billion, three hundred fifteen million, five hundred thirty-five thousand, four hundred five".